Gum-on-a-Chip Exploring Host-Microbe Interactions: Periodontal Disease Modeling and Drug Discovery

Area of Science:

• Oral biology
• Microbiology
• Immunology

Background:

• Periodontal disease affects millions globally, causing oral and systemic health issues.
• Understanding host-microbe interactions is vital for developing effective periodontal disease treatments.
• Advanced models are needed to study complex interactions between bacteria, host cells, and immune cells.

Purpose of the Study:

• To develop a biomimetic gum tissue model for studying periodontal disease.
• To investigate the effects of key periodontal bacteria on host immune responses within this model.

Main Methods:

• Bio-fabrication of a gum tissue model with barrier and immune functions within four days.
• Introduction of the periodontal pathogen Porphyromonas gingivalis to assess its impact.
• Introduction of the probiotic Akkermansia muciniphila to evaluate its therapeutic potential.

Main Results:

• Porphyromonas gingivalis suppressed immune cell recruitment and migration, dysregulated CD14 expression, and caused inflammation and tissue damage.
• Akkermansia muciniphila enhanced the host's immune defense mechanisms.
• The biomimetic model successfully replicated key aspects of periodontal disease pathogenesis.

Conclusions:

• The developed biomimetic gum tissue model is effective for studying periodontal disease.
• Porphyromonas gingivalis plays a significant role in immune suppression and tissue damage.
• Akkermansia muciniphila demonstrates promise as a therapeutic agent for periodontal disease.